/Engine/Plugins/Online/OnlineFramework/Source/Party/Public/SocialDebugTools.h
virtual void JoinParty ( const [FString](API\Runtime\Core\Containers\FString) & Instance, const [FString](API\Runtime\Core\Containers\FString) & FriendName, const [FJoinPartyComplete](API\Plugins\Party\USocialDebugTools\FJoinPartyComplete) & OnComplete )